KeyboardEvent.which

A legacy KeyboardEvent property that is equivalent to either KeyboardEvent.keyCode or KeyboardEvent.charCode depending on whether the key is alphanumeric.

Spec	https://w3c.github.io/uievents/#dom-uievent-which
Status	Unofficial / Note

IE	Edge	Firefox	Chrome	Safari	Opera
			108
		107	107	TP
		106	106	16.1
11	105	105	105	16.0	91
10	104	104	104	15.6	90
9	103	103	103	15.5	89
8	102	102	102	15.4	88
Show all
7	101	101	101	15.2-15.3	87
6	100	100	100	15.1	86
5.5	99	99	99	15	85
	98	98	98	14.1	84
	97	97	97	14	83
	96	96	96	13.1	82
	95	95	95	13	81
	94	94	94	12.1	80
	93	93	93	12	79
	92	92	92	11.1	78
	91	91	91	11	77
	90	90	90	10.1	76
	89	89	89	10	75
	88	88	88	9.1	74
	87	87	87	9	73
	86	86	86	8	72
	85	85	85	7.1	71
	84	84	84	7	70
	83	83	83	6.1	69
	81	82	81	6	68
	80	81	80	5.1	67
	79	80	79	5	66
	18	79	78	4	65
	17	78	77	3.2	64
	16	77	76	3.1	63
	15	76	75		62
	14	75	74		60
	13	74	73		58
	12	73	72		57
		72	71		56
		71	70		55
		70	69		54
		69	68		53
		68	67		52
		67	66		51
		66	65		50
		65	64		49
		64	63		48
		63	62		47
		62	61		46
		61	60		45
		60	59		44
		59	58		43
		58	57		42
		57	56		41
		56	55		40
		55	54		39
		54	53		38
		53	52		37
		52	51		36
		51	50		35
		50	49		34
		49	48		33
		48	47		32
		47	46		31
		46	45		30
		45	44		29
		44	43		28
		43	42		27
		42	41		26
		41	40		25
		40	39		24
		39	38		23
		38	37		22
		37	36		21
		36	35		20
		35	34		19
		34	33		18
		33	32		17
		32	31		16
		31	30		15
		30	29		12.1
		29	28		12
		28	27		11.6
		27	26		11.5
		26	25		11.1
		25	24		11
		24	23		10.6
		23	22		10.5
		22	21		10.0-10.1
		21	20		9.5-9.6
		20	19		9
		19	18
		18	17
		17	16
		16	15
		15	14
		14	13
		13	12
		12	11
		11	10
		10	9
		9	8
		8	7
		7	6
		6	5
		5	4
		4
		3.6
		3.5
		3
		2

Safari on iOS	Opera Mini	Android Browser	Blackberry Browser	Opera Mobile	Android Chrome	Android Firefox	IE Mobile	Android UC Browser	Samsung Internet	QQ Browser	Baidu Browser	KaiOS Browser
16.1
16.0	all	105	10	64	105 (1)	104 (1)	11	13.4	18.0 (1)	13.1	13.18 (1)	2.5
15.6		4.4.3-4.4.4 (1)	7	12.1			10		17.0 (1)
15.5		4.4 (1)		12					16.0 (1)
15.4		4.2-4.3		11.5					15.0 (1)
Show all
15.2-15.3		4.1		11.1					14.0 (1)
15.0-15.1		4		11					13.0 (1)
14.5-14.8		3		10					12.0 (1)
14.0-14.4		2.3							11.1-11.2 (1)
13.4-13.7		2.2							10.1 (1)
13.3		2.1							9.2 (1)
13.2									8.2 (1)
13.0-13.1									7.2-7.4 (1)
12.2-12.5									6.2-6.4 (1)
12.0-12.1									5.0-5.4 (1)
11.3-11.4									4
11.0-11.2
10.3
10.0-10.2
9.3
9.0-9.2
8.1-8.4
8
7.0-7.1
6.0-6.1
5.0-5.1
4.2-4.3
4.0-4.1
3.2

Notes

This property is legacy and deprecated.
"Some key events, or their values, might be suppressed by the IME in use". On mobile (virtual keyboard), all keys are reported as 229.

1. event.which number for keys does not always match expected value (difference may be dependent on hardware vs. on-screen keyboard?).

Resources

• MDN Web Docs - which